Soft-coal burner.



P. P. COOLEY.

SOFT COAL BURNER.

APPLICATION FILED NOV. 18, 1910.

1,075,335. Patented Oct. 14, 1913.

3 SHEETS-SHEET 1.

PM co, WASHINGTON, u. c.

P. P. COOLEY.

SOFT COAL BURNER.

APPLICATION FILED NOV. 18, 1910.

Patented 0ct.14,1913.

3 SHEETSSHEET 2.

[/7 Vania/ P. P COOLEY.

SOFT COAL BURNER.

APPLIOATION FILED NOV.18, 1910.

1,075,335. Patented Oct. 14, 1913.

3 SHEETSSHEET 3.

[/7 van for ceLummA PLANDGRAPH CQJVASHINGTQN, D, c.

arena ornien.

PROC'IOR COOLEY, OF PEORIA, ILLINOIS, ASSIGNOR TD OULTER 6: PROCIORSTOVE (30., OF PEORIA, ILLINOIS, A CORPORATION OI ILLINOIS.

SOFT-COAL BURNER.

Application filed November 18, 1910.

To all whom it may concern:

Be it known that I, PRoo'ron P. CooLEY, a citizen of the United States,residing at Peoria, in the county of Peoria and State of Illinois, haveinvented certain new and useful Improvements in Soft-Coal Burners, ofwhich the following is a specification.

This invention has reference to stoves and relates particularly to whatmay be known as a down-draft soft coal base-burner.

One of the objects of the present invention, is to improve the magazinetype of soft-coal burners, by constructing the fire pot wall withflue-openings and so arrange the dampers in the back-flue that theproducts of combustion may be caused to ascend through the fire-pot andout through the flue, or pass out through the flue openings in the wallof the fire-pot and down and through a flue in the base of the stove andthence out through the back-fiue The invention has for a further objectto improve the magazine type of soft-coal burners, by arranging thedampers in the back-fiue and so constructing the wall of the fire-pot,that the gases will be directed from the lower end of the magazine,thereby preventing the burning of the coal at this point and expansionof such coal to clog the outlet of the magazine; the gases being causedto descend around, preferably the front-half portion of the fire-pot,into and around the base of the stove and pass to and out the back-flue.

Further objects and aims of the invention will become apparent from thefollowing description' and drawings forming a part thereof, in whichFigure 1 is a vertical sectional view of a form of stove with myimprovements applied thereto; Fig. 2 is a cross-section through thebase, on the line 2-2 of Fig. 1; Fig. 3 is a cross-section through thestove just above the grate-bars, or on the line 3-3 of Fig. 1; Fig. 4 isa cross-section through the stove just above the fire-pot, or on theline 1-4 of Fig. 1; Fig. 5 is a cross-section of the stove, through themagazine, or on the line 55 of Fig. 1, and Fig. 6 shows a modifiedconstruction of the fire-pot, shown in Fig. 1.

Like characters of reference denote corresponding parts throi'ighout thefigures.

Specification of Letters ratent.

Patented @ct. 14:,1913.

Serial No. 593,066.

1 designates the outer shell or casing of the stove, which may be of anysuitable construction and the stove generally, of any preferred designand round or square.

2 is the coal magazine depending from the top of the stove andsurrounded by an air or combustion chamber 3 and suspended within themagazine 2, is a preferably tubular member l having the lower coneshapedor flared portion 5 intended to retard the progress of the coal throughthe magazine. The cone-shaped or flared portion 5 preferably protrudesfrom and below the lower end of the magazine, with its lowermost edgeapproximately flush with the top edge of the fire-pot 6.

The fire-pot 6 is preferably frusto-conical and seated or supported on asupporting ring 7, said ring conn cted with the shell or casing of thestove by webs 8. The forward web extending approximately across the fullwidth of the stove and between said webs are left flue-openings 9, seeFig. 3, communicating with the lower or base portion of the stove. Thefire-pot G is supported with the larger portion of the cone on the ring7, which is just the opposite of the manner of supporting or carryingthe usual or ordinary fire-pot, and the smaller or upper end of saidfire-pot 6 is formed with an up wardly and outwardly extended flaredwall 10 supporting a depending annular ring or wall 11 provided with aradial flange 12 which rests on or engages a ring 13 from the wall ofthe stove for sustaining the upper end of the firepot in its normalposition. The wall of the main body portion of the fire-pot 6 isprovided with a plurality of slots 14 and 15 having a staggered relationand the wall 10 and annular ring 11 of said fire-pot are provided withperforations 16 and 17, respectively. I prefer to arrange the slots 14and 15 and perforations 16 and 17 in the fire-pot around the front halfportion thereof, that the gases passing out of the fire-pot will passaround the forward half portion of the stove. The firepot is surroundedby a chamber 18. The openings ll and 15 are arranged in staggeredrelation and are made elongated for the purpose of allowing the gases toescape readily from the firepot.

The grate bars are designated 19 and may be of any well known orapproved construction.

20 designates a base-flue lining, see Figs. 1 and 2, which serves as thewall of the ashboX 21 and being spaced from the wall of the stoveproduces a flue 22 which is in communication with the chamber 18surrounding the fire-pot, through flue openings 9.

23 designates a combined flue and basestrip depending from and carriedacross or around the forward portion of the stove, see Fig. 1. The flue28 communicates with the flue 22 at its forward ends, as at 241-, seeFig. 2.

A door 25 may be provided forming a communication with the chamber 8,and a door 26, having a suitable valve or damper, not shown, may form acommunication with the ash-box 21. The magazine 2 may be covered in anysuitable manner and provided with means forming an easy access to saidmagazine 2.

25 designates a back-flue, in communication with the flue 22, in thebase of the stove, through an opening 26 and also adapted to be incommunication with the chamber 3, through an opening 27. The opening 26is adapted to be closed by a valve or damper 28 and the opening 27 isadapted to be closed by a damper or valve 29. The valves or dampers 28and 29 are operatively connected by a rod 30, which will operate toautomatically close either valve when the other is opened. For operatingthe valves, any suitable mechanical means may be provided.

lVhen starting a fire, it is preferable to place the valves 28 and 29 inthe position shown in dotted lines in Fig. 1. This will give a directdraft for the products of combustion from the fire-pot 6 to the flue 25through the opening 27 from chamber 3, see the dotted arrows in Fig. 1.When the fire has a sufficient start, the valves 28 and 29 may be movedto the position shown in full lines in Fig. 1, when the path of thegases will be directed through the slots 14 and 15 and through theopenings 16 and 17 into the chamber 18 and from thence drawn downthrough flue-openings 9 into the base flue; the gases circulatingthrough the flue 22, down into the flue-strip 23 and eventually find itsway out through the opening 26 into the back-flue 25 The back-flue mayhave acheck-damper as at 81.

The construction of the fire-pot is such that when the valve 28 is openand the valve 29 is closed the draft is downward in the direction of theopening 26 in the flue 25*. This will prevent the heated gases ignitingthe coal at the base of the magazine which would otherwise burn andexpanding clog the egress of the coal into the fire-pot. The slots 14and 15 will draw most of the heated gases from the fire-pot and theopenings 15 and 16 will turn back all heated gases rising to the top ofthe fire-pot. The stove is especially constructed to burn soft coal andwith the present arrangement it has been found that the coal will burnto a fine ash like hard coal.

7 In Fig. 6 the firepot instead of having slots like 1 1 and 15 in Fig.1, is provided with a plurality of perforations or open ings 32.

What 1 claim is 1. The combination of a stove casing, a flue havingopenings communicating with the casing near the top and bot-tom thereof,a fire pot comprising an upper flared portion and a lower frusto-conicalportion, the lower part of said frusto-conical portion being perforatedand the flared portion provided with a plurality of perforations, andmeans for closing either one of the flue openings, whereby the productsof combustion may be made to pass either upwardly through the fire potand out through the upper flue opening, or to pass through theperforations in the fire pot and out through the lower flue opening.

2. The combination of a stove casing, a flue having openingscommunicating with the casing near the top and bottom thereof, a firepot having a frusto-conical portion and an upper outwardly flaredportion, the lower part of said frusto-conical portion having aplurality of elongated slots ar ranged in staggered relation, saidoutwardly flared portion having a plurality of openings therein, andmeans for closing either one of the flue openings, whereby the prod netsof combustion may be made to pass either upwardly through the fire potand out through the upper flue opening, or to pass through theperforations in the fire pot and out through the lower flue opening.

3. The combination of a stove casing, a flue having openingscommunicating. with the casing near the top and bottom thereof, a firepot comprising an upper flared portion and a lower frusto-conicalportion, the lower part of said frusto-conical portion being perforatedand the flared portion provided with a plurality of perforations, all ofsaid perforations being located toward the front portion of the casing,and means for closing either one of the flue openings, whereby theproducts of combustion may be made to pass either upwardly through thefire pot and out through the upper flue opening, or to pass through theperforations in the fire pot and out through the lower flue opening.

4. The combination of a stove casing, a flue having openingscommunicating with the casing near the top and bottom thereof, a firepot comprising an upper flared portion and a lower frusto-conicalportion, the lower part of said frusto-conical portion be ing perforatedand the flared portion being provided with a plurality of perforations,a out through the lower flue opening, when 10 flange depending from saidoutwardly flared the upper flue opening is closed.

portion and provided with perforations, and In testimony whereof I aflixmy signature, means for closing either one of the flue openin presenceof two witnesses.

in 's whereby the products of combustion mgy be made to pass eitherupwardly PROCTOR OOOLEY' through the fire pot and out through the upperflue opening or to pass through the perforations in the fire pot andflange and 1 Witnesses:

J OHN Downs, J. N. SMITHsoN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. O.

